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Picture of Wooden Catapult
this catapult will shoot a 1/2 inch marble 100 feet

Step 1: Frame

Picture of Frame
The base is a 2x2 foot square with two 3 foot uprights. The uprights are screwed into the inside of the box in the center of the frame.
 
EuniceR110 months ago

How did you make the hole for the metal rod?

camman61898 (author)  EuniceR110 months ago
with a hole saw that goes on a drill
camman61898 (author) 1 year ago
I bought them at Lowe's.
Where did you buy/find those springs
camman61898 (author) 1 year ago
Please post questions if you have any.